Improvement in lamp-exting-uishers



J. PONS. Lamp Extinguisher Patented March 2. 1869.

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JOHN PoNs, 0E BALTIMORE, MARYLAND, AsiucNoR TO HIMSELF, JOHN s. R ssE L, AND HENRY VOGLER, 0E SAME PLACE.

Letters Patent No. 87,511, dated March 2, 1869.

IMPROVEMENT IN LAMP-EXTING-UISHERS..

The Schedule referred to in these Letters Patent and making==part of the same.

. by declare that the following is afull clear, and exact description of the construction and operation of the same, reference being had to the accompanying drawxipgs, making a part of this specification, in which Figure 1 is a vertical section, through line y y of fig. 2.,

Figure 2 is a horizontal section, throughline a: a; of fig. 1. y

Figure 3 is a vertical section, showing a modification of the device represented in fig. 1.

The object of this invention is to provide, for public nse alam so constructed and o eratin that when by being overturned, or from any other accident, the chimney shall drop off, or-cease to bear upon the cap, the fiam'eof the lamp shall be automatically extinguished, and all danger of explosion thereby avoided.

To effect this purpose,'I construct the cap, 0 in two parts, 0 c, the adjacent edges of which, directly in line with the wick w, are sharp, and overlap or shut by each other, like the blades of a pair of scissors, or like the old-fashioned snufiers. 7

These' two parts are pivoted at their adjoining corners upon trunnions t t, t t, so as to render them capable of being opened and shut, as above described.

Their outer edge, midway on their perimeter, between the trunnions t t, is supported upon spiral springs s s, which, by their upward pressure, shut the two parts a 0' together over the wick-tube, unless the force of the springs is in some way counteracted.

The parts 0 0' may be provided also with auxiliary blades a a, shutting past each other, below the edge of the cap, and almost or quite in contact with the top of thewick-tube, as shown in fig. 1. 4

Each of these blades may be provided with a vertical side-flange, e c, shutting in connection with each other, in the same-manner as the horizontal portion of the blades.

The chimney Gr rests upon the base-flange F of the parts 0 c, and is held in place by springs m m.

' The whole burner screws into the lamp by the threads 0 0' in the usual manner.

Combustion is supported by air admitted through the openings at a, or in any other suitable manner.-

The operation of the apparatus is very simple and efiective. The weightof the chimney, when the latter is in place, counteracts the force of the springs s s, and holds the edges '1} o and the blades a a and e e apart, so as not to interfere with the flame. But when, from any cause, the chimney is removed, the sharp edges snap together and extinguish the light, before any of the oil can possibly have escaped from the globe.

The device may, when the lamp is not lighted, be

employed for trimming and cleaning the wick.

1f itbe desired'to remove the chimney without extin guishing the flame, that object can be accomplished by holding down the edges of the flange near the springs s s, with the finger, or otherwise.

The spiral form of the springs s s is not, oilcourse, material. Any form of spring may be employed which will answer best.

It is not, of course, necessary that the springs s s be situated vertically under the glass shade or chimney. They may be placed horizontally, as shown in fig. 3, so that when the chimney is in position, it will press inward against them, and thereby open the jaws of the cap, and when removed, the springs will close the jaws again.

Having thus described my invention,

What I claim as new, and desire to secure by Letters Patent, is-

'1 Constructing thc'cap of a lamp in two parts, cc, each pivoted as at t t, and the two parts having their edges meeting or overlapping in the line of the wicktube, substantially as and for the purpose set forth.

2. In combination with'the two parts 0 c, the springs s s, and chimney G, constructed and arranged to operate in the manner and for the purposes described.

3. Providingthe two pivoted parts, 0 c, of the cap with the auxiliary blades a a, substantially as and for the purpose specified.

4. A lamp-extinguisher c c, or a a, so constructed and operating that the weight of the chimney resting upon it, keeps its jaws open, and when that weight is removed, by the overturning of the lamp, or otherwise, the jaws willcloseand put out the light.

JOHN PONS.

Witnesses:

CHAS. A. Pn'r'rrr,

S. O. KEMoN; 

